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A325668
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First term of n-th difference sequence of (floor(k*r)), r = sqrt(5), k >= 0.
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3
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2, 0, 0, 0, 1, -5, 15, -35, 71, -135, 255, -495, 991, -2015, 4095, -8255, 16511, -32895, 65535, -130815, 261630, -523753, 1048322, -2096151, 4183700, -8324849, 16480854, -32363019, 62784774, -119759849, 223346544, -404491999, 705032194, -1166803109
(list;
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listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Clark Kimberling, Table of n, a(n) for n = 1..200
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MATHEMATICA
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Table[First[Differences[Table[Floor[Sqrt[5]*n], {n, 0, 50}], n]], {n, 1, 50}]
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CROSSREFS
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Cf. A325664, A325669.
Inverse binomial transform of A022839.
Sequence in context: A226369 A320751 A263764 * A070202 A280129 A227344
Adjacent sequences: A325665 A325666 A325667 * A325669 A325670 A325671
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KEYWORD
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easy,sign
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AUTHOR
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Clark Kimberling, May 13 2019
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STATUS
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approved
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